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(No Model.)

G. S. ARMSTRONG.

PIPE AND MONKEY WRENCH.

No. 323,017. PatentedfJuly z8; 1885.

Iig Z //a Unirse STATES GEORGE S. ARMSTRONG, OF DENVER,

BATRNT1 trice.

COLORADO, ASSIGNOR OF ONE-HALF TO WM. G. HUTOHINSON AND'JOHN L. BERGER, BOTH OF SAME PLACE.

PIPE AND MONKEY WRENCH.

SPECIFICATION forming part of Letters Patent No. 323,017, dated July 28, 1885.

I Application filed August 25, 1884. (No model.)

To all whom it may concern:

Be it known that I, GEORGE S. ARMSTRONG,

a subject of the Queen of Great Britain, residing at Denver, in the county of Arapahoe and 5 State of Colorado, have invented certain new and useful Improvements in Pipe and Monkey Vrenches, of which the following isa specificatiou,reference being -had to the accompanying drawings.

My invention relates to improvements in pipe and monkey wrenches; and the object of my improvements is to provide a combined pipe and monkey wrench quickly adjusted,of superior strength and durability,and that can be manufactured more cheaply than other wrenches now in use. I attain these objects by means ofthe mechanism illustrated in the accompanying drawings, in which- Figure l is a side view of my invention; Fig. 5, a sectional side view through the center; Fig. 2, a view of the adjustable corrugated or smooth wedge; Fig. 3, a View of the small spring; Fig.v 4, a view of the vertical adjusting-clamp.

Similar letters refer' to similar parts throughout the several views.

In Fig. l, A represents a notched bar with eorru gated or smooth jaw c and the set-screw a.

B represents a sliding block through which the bar A passes. Y

O is an eccentric lever working within the block B, as shown in the drawings,and securely held in place by the tapering pin c, which passes through the block B and upon which the eccentric lever works.

D is a vertical adjusting-clamp notched to correspond with notches on the bar A, and from which projects at a right angle the guide d, with the head d', (distinctly observed in Fig. 4,) the guide being dovetailed to work in a corresponding slot in the block B.

F represents an adjustable corrugated or smooth wedge dovetailed to fit a corresponding slot in the block B.

E is a small spring attached to the sliding block B by a set-screw, e. This spring is connected at one extremity with the vertical clamp D, the slot e', as shown in Fig. 3, receiving the head d', as shown in Fig. 4. At the other 5o extremity the spring is connected with the adjustable wedge F, the end of the spring being received in the` notch f, being a notch in the dovetail of the wedge F, as shown in Fig. 2.

The relation of the different parts of my invention to one another and the working of all in combination will be fully understood from the following explanation: The eccentric lever C being moved from the bar A to a position at right angles to the bar,as shown by the dotted lines in Fig. 1, the springE lifts theclamp 6o D out of the notches in the bar, the guide marked d in Fig. 4 working in the dovetailed slot in block B,as above described. rlhe clamp D being raised out ofthe notches in the bar A and thus held by the spring E, the sliding block B may be moved along the bar A at pleasure to any position between the jaw c and the set-screw a. The sliding block B having been shifted to suit the purpose,the eccentric lever C is closed toward the bar A till it 7o occupies a position parallel with the bar, as shown in Figs. 1 and 5,thus forcing the notched clamp D in contact with the bar A, the notches in the bar receiving corresponding notches in the clamp. rIhe eccentric lever being in the position last above described, the wrench is ready for use,aud the j aws having been brought in contact with the desired object the bar A is moved around toward the side containing the eccentric lever, thus forcing the wedge F 8o B. As soon as the power applied in turning the wrench ceases to act the spring E, connected with the wedge F as aforesaid, raises the wedgel to its original position, as shown in Figs. l and 5 in the drawings. 9o

That I claim as my invention, and what I desire to secure by Letters Patent of the Unitedv States, is-

l. In a combined pipe and monkey wrench, the combination of notched bar A with corrugated jaw c, the sliding block B, receiving the bar A, the eccentric lever C, working within the block B, the tapering pin c, passing through the block B, and the eccentric lever C, in the manner shown in the drawings, and so as to alroo d, and the head d', as shown in Fig. 4, the spring E, fastened to sliding block B by the set-screw e and containing the slot e', and the smooth Wedge F, containing the notch f, as shown in Fig. 2, which receives the smaller end of the spring E, substantially in the manner and for the purpose above explained and 2o set forth.

GEORGE S. ARMSTRONG.

Attest:

'FRANK I. WILLsEn, BRINTON GREGORY. 

